Inter Generation Trait Association and Regression Analysis in F2 and F3 Generations of Rice

Aananthi, N.

doi:10.20546/ijcmas.2018.708.370

Cited by 3 publications

(5 citation statements)

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“…While skewness values greater than zero indicates the presence of complementary interactions, its value lesser than zero indicates duplicate interactions for the specific traits (Choo and Reinbergs, 1982). Leptokurtic and platykurtic curves indicate the influence of a relatively fewer and larger number of genes in controlling a trait, respectively (Aananthi, 2018). In the present study, a positively skewed and platykurtic curve was observed for days to 50 per cent flowering, chaffy grains per panicle and single plant yield in BC 2 F 3 and for chaffy grains, productive tillers, single plant yield in BC 2 F 4 generations.…”

Section: Resultsmentioning

confidence: 99%

Parent progeny regression analysis in segregating generations of drought QTLs pyramided rice lines (Oryza sativa L.)

2021

EJPB

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The present study was undertaken to estimate the effectiveness of selection for the yield and yield contributing traits in the BC 2 F 3 and BC 2 F 4 generations of drought QTL introgressed progenies of Improved White Ponni (IWP) x Apo. A positively skewed and negatively skewed platykurtic curve was observed in many of the traits in both generations indicating the influence of a large number of genes. Significant and positive intergenerational correlation and regression coefficient values were obtained for all the yield contributing characters indicating that selection can be done in these generations for isolating superior genotypes. Narrow sense heritability estimates obtained high values for the traits days to 50 per cent flowering, the number of productive tillers, filled grains per panicle and single plant yield indicating that selection will be effective for these traits in these early generations.

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Section: Resultsmentioning

confidence: 99%

Parent progeny regression analysis in segregating generations of drought QTLs pyramided rice lines (Oryza sativa L.)

2021

EJPB

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“…Majority (88%) of our measured traits may be conforming to the above since our single plant selection program commenced at F 6 . However, there are some traits whose effective selection would be most appropriate at the advanced generations (Kahani and Hittalmani, 2016;Aananthi, 2018). Our study identify plant height at maturity as one of such phenotypic traits whose most effective selection can be achieved at F 6 -F 7 intergeneration and indicating F 6 as a good indicator for F 7 performances.…”

Section: Discussionmentioning

confidence: 62%

“…Selection response of traits differ among traits and the most effective generation to make selection for each trait based on correlation and regression analyses outcome equally differs. In respect of segregation generations, many authors (Vanniarajan and Ramalingam, 2011; Govintharaj et al, 2017;Aananthi, 2018) have hinted that selection at earlier generations are most effective for many traits. Majority (88%) of our measured traits may be conforming to the above since our single plant selection program commenced at F 6 .…”

Section: Discussionmentioning

confidence: 99%

“…The obtained paired similarity distance was employed and subjected to principal component and clustering analysis. The parent progeny correlation and regression analysis between F6 with F7 and F7 with F8 was carried out following the procedure of Govintharaj et al (2017) and Aananthi (2018). To further identify the introgressive trend for each genotype for the combined 15 phenotypic traits, similarity of each genotype to the two parents was performed for F 6 , F 7 and F 8 data using Gower genetic distance in SAS (version 9.4 (SAS, 2011).…”

Section: Methodsmentioning

confidence: 99%

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Introgression Progress for Phenotypic Traits and Parent-progeny Diversity at Advanced Segregation Population From Oryza Barthii and Oryza Glaberrima/oryza Sativa Crosses

Popoola

Adewale

Okonji

et al. 2022

Preprint

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Rice is a cereal staple of global fame and importance. Oryza barthii, a wild species holds significant traits and its utilization in rice breeding is rare. This study traced introgression trend of heritable traits in the offspring of O. barthii with an Africa-Asian progenitor to F8 and assessed diversity between the parents and the F8 population. Significant (P<0.05) genotypic variation existed for all the traits except tiller number, panicle/meter squared, grains/panicle and 1000 grain weight. Grains/panicle and days to 50% flowering had respective least (3.34%) and highest (96.32%) broad sense heritabilities. All traits had lower GCV compared to PCV. The least (5.28% and 8.05%) and the highest (90.8% and 98.1%) GCV and PCV were respectively from grains/panicle and tiller number. Clear variations on the panicles and grains include: variations in sizes, shapes, colours, presence or absence of awns. The total variance explained by five principal component axes was 80.1%. Plant height at maturity was the only trait with significant (p ≤ 0.01) correlation and regression between F6 and F7. Progenies resemblance to Parent 1(IRGC 104084) retrogressively declined but parent-offspring to parent 2 (TGS 25) progressively increased from F6 to F8. Three visible groups of rice type in this study were: the O. barthii (11%), O. sativa (67%) and the intermediate group (22%). This research has added to rice genetic resources; an investigation of the nutritional status of the progenies would be an interesting research.

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“…Leptokurtic is defined as having a kurtosis value > 1 and Platykurtic as having a kurtosis value < 1. According to leptokurtic and platykurtic curves, a trait is influenced by, respectively, a smaller and greater number of genes (Aananthi, 2018) DFF: Days to fifty percent flowering (days); NPT: number of productive tillers per plant; PL: panicle length (cm); FLL: flag leaf length (cm); FG: number of filled grains per panicle; CG: number of chaffy grains per panicle; TG: total grains per panicle; SF: spikelet fertility; HSW: hundred seed weight; SD: stem diameter (mm); SPY: single plant yield (g).…”

Section: Kurtosis Value Of 1 Indicates Mesokurtic Behaviourmentioning

confidence: 99%

Harnessing parent-offspring regression analysis to develop high-yielding submergence tolerant lines of Oryza sativa L.

2023

EJPB

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Given the urgency of rising sea levels and the need to sustain food production, developing flood-tolerant crops is essential. The aim of this study was to assess the genetic potential of the cross CO51x13-6 (NIL of CO43Sub1) in the BC 2 F 4 and BC 2 F 5 generations using Parent Offspring regression analysis. Significant variation was observed across a wide range of traits in both generations. The distribution of important traits, including plant height, number of productive tillers per plant, panicle length, and single plant yield, showed a positively skewed and platykurtic curve in both generations, indicating the influence of multiple genes. The correlation and regression coefficients were highly significant for all the recorded traits in this study. The traits with the highest narrow sense heritability were days to fifty percent flowering, followed by stem diameter and spikelet fertility, suggesting that these traits can be effectively utilized for selecting superior genotypes in the early generations.

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Inter Generation Trait Association and Regression Analysis in F2 and F3 Generations of Rice

Cited by 3 publications

References 0 publications

Parent progeny regression analysis in segregating generations of drought QTLs pyramided rice lines (Oryza sativa L.)

Parent progeny regression analysis in segregating generations of drought QTLs pyramided rice lines (Oryza sativa L.)

Introgression Progress for Phenotypic Traits and Parent-progeny Diversity at Advanced Segregation Population From Oryza Barthii and Oryza Glaberrima/oryza Sativa Crosses

Harnessing parent-offspring regression analysis to develop high-yielding submergence tolerant lines of Oryza sativa L.

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